1.usb 2.0 2.USB flash disk,usb flash drive,usb memory stick 3.512mb,1gb,2gb,4gb,8gb 4.cutomized ... /1GB/2GB/4GB/8GBUSB Connection: Plug & play/Supports hot swap USB Interface: USB 2.0 port certification: CE ,ROHS ,FCC Hardware: PC ... /or Macintosh with USB portOperation System: Windows98/ SE/ME/2000/XP, Macintosh 8.6 or above, Linux2.4 or above plastic USB flash drive